Electric connecter



Jan. 21, 1930. L. DESLOGE 1,744,071

ELECTRIC CONNECTER Filed Feb. 15, 1926 ii!!!"lllllmllllllllll W .[Nt/EA/TOP 5 [cu/3 Dis/57a,

A?" TOP/Q5 V Patented Jan. 21, 1930 UNITED STATES PATENT OFFICEM LOUIS DESLOGE, OF FERGUSON, MISSOURI, ASSIG-NOR T WATLOW' ELECTRIC MFG. 60.,

7 OF ST. LOUIS, MISSOURI, A CORPORATION OF MISSOURI ELECTRIC oonnnc'rnn Application filed February 15, 1926. Serial No. 88,281.

This invention relates generally to electricconnecters and, more particularly, to'a certain new and useful improvement in electric-connecters for the conducting-cords or terminals of electric devices and appliances.

Most portable electric-lamps and other such translating devices are today equipped with a conducting-cord provided at an end with a two-piece separable so-called plug, the

' latter comprising a recessed contact-seating member adapted for threading into a fixed wall or 'fioor socket and a complementing contact-member having projecting-fingers adapted to seat in the recessed contact mem- 5 her to complete the service-circuit to the lamp or other such device or appliance. F requent- 1y, however, the conducting-cord furnished with the lamp or other device or appliance is of such limited length as to restrict and circumscribe the radius of portability, and hence the usable location, of the lamp or other device relatively to the fixed socket. Electrical irons and the like of standard construction are generally equipped with a pair of projecting contact-prongs or terminals adapted to seat in a somewhat expensive co-operating connecter provided upon an end of a conducting cord also furnished with the iron or other such appliance.

My present invention has accordingly for its chief object the provision of a connecter whereby the'radius of portability and location of a lamp or other such device may be conveniently increased and enlarged, or by may be conveniently connected in the service circuit.

My invention has for a further object the provision of a connecter of'the type and for the purpose stated which may be cheaplyand inexpensively manufactured, and which includes efficient, compact, and durable separable plug members adapted forfacile electri cal co-operation and engagement with the terminals and separable plugs of present standard production and use.

.And with the above and other objects in View, my invention residesin the novel features of form, construction, arrangement, and

which an electric iron or other such appliance suitable or desired length, equipped at an en combination of parts hereinafter described and pointed out in the claims.

In the accompanying drawing,

Figure 1 is a broken elevational view of a standard conducting-cord comprising, and elongated by, an extension equipped with a separable connecter embodying my invention;

Figure 2 is atransverse sectional view of the separable intermediate or recessed contact-seating member of the connecter;

Figure 3 is an elevational view of one of the contact-carrying caps of the connecter;

Figure 4 is an assembled elevational view, partly broken away and in section, of the connecter; and j r Figure 5 is an elevational view of the other contact-carrying cap of the connecter.

Referring now more in detail and by reference characters to the drawing, in which I have for purposes of illustration shown my invention in connection with a standard conducting-cord equipped at an end with a plugmember A of a standard separable plug, member A,briefly, comprising a chambered insulation body 1 of generally semispheric'al shape or contour in elevation, leading into which is the conductor 2. Suitably attached to body 1 andhaving electrical connection with the conductor 2, is'a projecting parallel pair of somewhat rigid contact-members or fingers 3 formed adjacent their free end, for purposes shortly appearing, with recesses or openings 4. It may be observed here that a conducting cord and plug or connecter member such as the cord 2 and connecter or plug-member A are usually, as present standard equipment, furnished with portable electric lamps and other such devices, the contact-fingers 3 being adapted normally, to complete the circuit to seat in a slotted or recessed complementing connecter or plug-member B threaded into the usual fixed wall or floor socket.

To elongate cord 2 and thereby conveniently and readily enlarge the sphere of portable movement of the lamp or other such device or appliance relatively to the fixed wall or floor socket, I interpose an extension of my invention, which includes a conductor O of an as described, with a connecter or plug-member A similar in form and construction to the standard plug-member A. At its other or opposite end, however, the cord C leads into a second or auxiliary connecter or plug capmember D, which similarly comprises a chambered insulation body 5 of likewise gen-- erally semi-spherical shape or contour in elevation. Suitably attached to body 5 and having electrical connection with the conductor C, is a projecting approximately parallel pair of yielding or spring contact-fingers 6 formed, for purposes soon to appear, adjacent their inner fixed end with oppositely outwardly presented knobs 7 and at their free end with oppositely inwardly presented lips 8, the fingers 6 intermediate the knobs 7 and lips 8 being oppositely slightly humped outwardly, as at 9.

Formin part of the connecter and adapted for separable or detachable co-operation with the cap-member D, is a cylindrical intermediate or contact-seating insulation member E formed with a pair of suitably spaced parallel slots 10 opening at their opposite ends upon the opposite end faces 11, 12, of the member E and provided at the end face 12 of member E with oppositely inwardly presented recesses 13,13.

In coupling the members D and E, the fingers 6 of member D are first projected endwise into and through the slots 10 of member E to separably seat at their inturned ends or lips 8 in the end-recesses 13 and to yieldingly hug approximately throughout their length the inner walls of the slots 10. The members D and E are thereby separably retained 0p eratively together with the member D snugly seated at its end face upon the one end face 11 of member E. At the same time, there are provided in the member E by means of the engaging fingers 6 and the slots 10 accommodating terminal connecter-sockets or seats for the fingers 3 of the standard plug-member A carried by the cord 2, which latter fingers may now be slidably projected endwise into said sockets to seat said member A at its end face upon the end face 12 of member E, the fingers 3, when so fitted into said sockets not only electricall engaging with the fingers 6 to complete tie service circuit to the lamp or other such device, but also both frictionally at the humps 9 and mechanically at their recesses 4 engaging with the fingers 6 and their knobs 7 to secure and connect the members A and E separably together. The member A carried by the conductor C may now be easily engaged at its fingers 3 with the socket-seated plug or connecter-member B, and thus, by means of my new connecter and its carrying cord, which may be most easily interposed in and connected with the standard cord 2, the available length of the furnished or so-called standard cord 2 and the consequent radius of movement of the lamp or other such device or appliance may be most conveniently increased and enlarged to meet additional requirements or desires. It will be obvious also that, while not here specifically shown, the so connected members D and E form a connecter which may be readily electrically engaged at said terminal sockets, formed by the fingers 6 and slots 10, with the projecting terminals of an electric iron or other such device, the said members D and E thus providing an eflicient, inexpensive connecter for conveniently connecting the iron or other appliance with the service circuit.

It will be evident further that the members D and E may be easily separated or detached the one from the other to permit of convenient engagement of the cord C with the conducting-fingers 6.

I am aware that changes in the form, construction, arrangement, and combination of the several parts of my new plug and cord may be made and substituted for those herein shown and described without departing from the nature and principle of my invention.

Having thus described my invention, What I claim and desire to secure by Letters Patent 1s:

1. In an electrical connecter, in combination, a rigid insulation member having a pair of spaced slots, said slots opening upon the opposite ends of the member, and a capmember comprising as a unit an insulation body and a pair of lipped spring contact-fingers fixed at an end upon the insulation body, the insulation body being adapted to abuttingly seat upon an end of said member and said fingers being adapted for endwise projection to reside in said slots and to detachably engage at their lipped free ends with the opposite end of said member to separably retain said member and the cap-member together, said fingers and slots co-operatively providing the connecter with terminal conducting-sockets.

2. In an electrical connecter, a first separate member, a second separate member, and a pair of contact-fingers projecting from each of the'respective first and second members, in combination with a separate rigid third member having a pair of spaced longitudinal slots opening upon the opposite ends thereof, said third member being adapted for interposition intermediate the first and second members and to receive at its slots the contactfingers thereof, one pair of said contact-fingers being ada ted for engagement with the opposite end 0 the third member for separably retaining the first and third members together and said pairs of contact-fingers being adapted, when disposed in said slots, for interengagement for separably retaining the first and second memberselectrically and mechanically together.

3. In an electrical connecter, a first separate member, a second separate member, a

pair of contact-fingers projecting from each of the respective first and second members, and conductors electrically connected at res ective ends with the respective fingers of the rst and second members, in combination with a separate rigid third member having a pair of spaced longitudinal slots opening upon the opposite ends thereof, said third member being adapted for interposition intermediatethe first and second members and to receive at its slots the contact-fingers thereof, one pair of said contact-fingers being adapted for engagement with the opposite end of the third member for separably retainingthe first and third members together and said pairs of contact-fingers being adapted, when disposed in said slots, for interengagement for separably retaining the first and second members electrically and mechanically together.

4. In an electrical connecter, in combination, an intermediate rigid insulation member provided longitudinally with a pair of spaced slots, said slots opening upon the opposite ends of the member, a first-insulation capmember, a second insulation cap-member, a .pair of-contact-fingers projecting from each of the respective cap-members, and conductors electrically connected at respective ends with the respective fingers of the cap-members, the first cap-member being adapted to abuttingly seat upon one end of the inter mediate member with the fingers thereof fitting lengthwise in said slots and the second cap-member being adapted to abuttingly seat uponthe opposite end of the intermediate member with its said fingers fitting lengthwise in said slots in opposed relation to the fingers of the first cap-member, one pair of said contact-fingers being adapted for engagement with the opposite end of the third member for separably retaining the first and third members together and said pairs of contact-fingers being adapted, when disposed in said slots, for interengagement for separably retaining the first and second members electrically and mechanicall together.

In testimony whereo I have signed my name to this specification:-

LOUIS DESLOGE. 

